Parse int to byte array

IntToByteArray.java

import java.io.*;
import java.util.Arrays;

/**
 * Created by lWeRl on 27.11.2017.
 */
public class IntToByteArray {

    public static void main(String[] args) throws IOException {
        ByteArrayInputStream bais = new ByteArrayInputStream(parseInt(12345));
        DataInputStream dis = new DataInputStream(bais);
        System.out.println(dis.readInt());
    }

    public static byte[] parseInt(int i) {
        String binary = String.format("%32s", Integer.toBinaryString(i)).replace(' ', '0');
        byte[] result = new byte[4];
        for (int j = 0; j < 4; j++) {
            String part = binary.substring(j * 8, j * 8 + 8);
            result[j]= (byte) Integer.parseInt(part, 2);
        }
        return result;
    }


}